tried to install unofficial packages, that's not supported.
** Changed in: nvidia-graphics-drivers-173 (Ubuntu)
Status: New = Invalid
--
package nvidia-glx-173 (not installed) failed to install/upgrade: subprocess
new pre-installation script returned error exit status 2
** Attachment added: AptOrdering.txt
http://launchpadlibrarian.net/37296921/AptOrdering.txt
** Attachment added: BootDmesg.txt
http://launchpadlibrarian.net/37296922/BootDmesg.txt
** Attachment added: CurrentDmesg.txt
http://launchpadlibrarian.net/37296923/CurrentDmesg.txt
**
